update ci, actually add ruleset

.github/workflows/codeql-analysis.yml

@@ -3,8 +3,12 @@ name: Run CodeQL
 on:
   push:
     branches: [ master ]
+    paths-ignore:
+      - '**/*.md'
   pull_request:
     branches: [ master ]
+    paths-ignore:
+      - '**/*.md'
   schedule:
     - cron: '24 2 * * 4'
 
@@ -12,6 +16,7 @@ jobs:
   analyze:
     name: Analyze
     runs-on: ubuntu-latest
+    if: github.repository == 'jellyfin/jellyfin-plugin-template'
 
     strategy:
       fail-fast: false
@@ -25,7 +30,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 5.0.x
+          dotnet-version: 6.0.x
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v1